View clinical trials related to Early Pregnancy.
Filter by:To evaluate the detection of hCG in the early pregnancy urine samples by Human chorionic gonadotropin (HCG) test system.
This clinical trial consisted of lay user study and method comparison study. Method comparison study: evaluate the clinical performance by comparing the results of new device and FDA cleared device (the comparator) tested on the same sample by professionals. Lay user study: evaluate the usability of by comparing the results of new device on the same sample tested by professionals and lay user, and by lay users complete the questionnaire.
This research integrates artificial intelligence to enhance early pregnancy ultrasonography quality control, focusing on specific fetal sections. In collaboration with prominent medical institutions, the investigators have amassed extensive fetal ultrasound data. The investigators aim to develop a deep learning model that can accurately identify essential anatomical areas in ultrasound images and evaluate their quality. This tool is expected to significantly decrease misdiagnoses of conditions like Down Syndrome and neural system deformities by ensuring real-time image quality assessment.
Maternal age is an important factor affecting the pregnancy process and its results. Adverse obstetric outcomes such as preterm birth, stillbirth, and infant mortality are more common in women older than 35 years and younger than 20 years compared to women aged 20-29. Adolescent pregnancies have been associated with an increased risk of adverse pregnancy outcomes such as preterm birth, low birth weight, perinatal death, and maternal mortality. Advanced maternal age pregnancies were associated with higher rates of maternal hypertension and diabetes, and progressively worsening perinatal outcomes such as stillbirth, preterm birth, and low birth weight. Although the investigators' region has high birth rates, as far as they have observed, the rates of early and advanced maternal age are also quite high. the investigators' aim in this study is to determine the absolute effects of early and advanced maternal age on pregnancy and to investigate the pregnancy outcomes of these mothers.
Gestational Diabetes Mellitus (GDM) refers to the abnormal glucose metabolism first detected during pregnancy. It is estimated that approximately 7% of pregnant women worldwide and their offspring are affected by GDM. The incidence of GDM in China is as high as 18.9%. A number of studies have shown that GDM complicates 3%-25% of pregnancies and poses serious health and life threats to the mother and child. In fact, due to the lack of physical activity during pregnancy and the decrease of insulin sensitivity compared with non-pregnancy, the optimal time for intervention has long been lost until the diagnosis of GDM in the second trimester. However, it is a pity that no authoritative screening method for GDM in early pregnancy has been established, and the pathogenesis of GDM is still unclear. This study intend to search for biomarkers used for screening of GDM in early pregnancy and explore the pathogenesis of GDM, so as to provide new ideas for prevention measures and treatment targets of GDM.
To further develop the patient care pathway for women classified with a pregnancy of unknown location (PUL) and ectopic pregnancy (EP).
Pulse diagnosis is an important method to judge the status of patients in the process of diagnosis and treatment of traditional Chinese medicine. At present, the commonly used site of pulse diagnosis is the radial artery, which is divided into "cun""guan""chi". Whether the diagnosis of pregnancy can be diagnosed by pulse diagnosis has been perplexing clinicians. In long-term clinical practice, it is found that slippery pulse often occurs in the radial artery of pregnant women. Before the 13th week of pregnancy, it is called early pregnancy. During pregnancy, chorionic gonadotropin gradually increases, progesterone increases, humoral metabolism changes, blood volume increases, hemodilution and cardiac output increase. Other studies have shown that due to the effect of estrogen, the number of active levels of renin in plasma increase several times, and will increase with the progression of pregnancy. This series of changes in pregnant women may be reflected in the pulse. During the clinical pulse examination, our team has found that some pregnant women had no abnormality in pre-pregnancy examination such as B-ultrasound, and abnormal unsmooth pulse in the ulna could be felt during pulse examination. Through follow-up, it is found that this kind of pregnant women may have miscarriage or stillbirth. Our team found that there are low-frequency sound waves in the radial artery, which carry the physiological and pathological information of the organs in the body, and developed a "Pulse Detection System of Sound Waves". Previous projects have explored the abnormal sound waves of radial artery in patients with sequelae of cerebral infarction, stable coronary heart disease, chronic gastritis, neck-shoulder syndrome, liver cirrhosis and other diseases and achieved certain results. Therefore, in this study, the "Pulse Detection System of Sound Waves" will be used to collect the sound waves in the radial artery of 76 healthy early pregnant women and 76 relatively healthy non-pregnant women. Fourier transform, wavelet analysis, Hilbert yellow transform and other methods will be used to identify the different characteristics of the pulse acoustic signals, and observe the time-frequency domain characteristics of the trial group and the control group.And researchers will carry on the diagnostic test, calculate the sensitivity and specificity of the "Pulse Detection System of Sound Waves" in the diagnosis of pregnancy. This study will verify the efficacy of pulse diagnosis of traditional Chinese medicine in the diagnosis of pregnancy and lay a foundation for the diagnosis of abnormal pregnancy.
Prospective nationwide cohort study of pregnant women enrolled early in gestation and followed for Covid-19 exposure and infection, with follow up of obstetrical outcomes and infant development through the first year of life.
Kisspeptins are a family of neuropeptides that are critical for the puberty initiation and female fertility. The investigators aimed to investigate in this study kisspeptin levels in early pregnancy, ectopic pregnancy, and early pregnancy loss.
Although one fourth of pregnant women experience at least 1 abortion, yet only 50% of causes are identified. Pregnancy loss can result from viral, bacterial, and other infections. It can reach the fetoplacental units through blood born or local spread. Lower genital tract infections- a potentially preventable infections- was suggested as a cause of spontaneous miscarriage. It was reported in 15 and 66% of early and late miscarriages respectively. These infections are also commonly encountered among apparently healthy looking pregnant women with an overall prevalence of 40-54%. If left untreated it can lead to premature rupture of the membranes, preterm birth, low birth weight, Fetal loss, neonatal ophthalmic and pulmonary damage.